Aircraft Measurements of Aerosol Physical, Chemical and Optical Properties During ACE-1

ACE-1 期间飞机对气溶胶物理、化学和光学特性的测量

• 批准号: 9419475
• 负责人: Antony Clarke
• 金额: $ 21.11万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9419475&HistoricalAwards=false
• 关键词: Aircraft; Measurements; Aerosol; Physical; Chemical

9419475 Clarke This project is part of the Southern Hemisphere Marine Aerosol Characterization Experiment (ACE-1), which will be conducted in the remote Southern Pacific in 1995 using aircraft, ship-board, and ground-based measurements of a wide variety of chemical species, physical and meteorological parameters with the central goal of investigating the formation, evolution, and optical properties of atmospheric aerosol. In this component, a variety of instruments will be deployed on the C-130 aircraft to measure aerosol properties: thermally conditioned optical particle counters will be used to assess size resolved composition of the larger optically active aerosol, various condensation nuclei counters, ultrafine condensation nuclei counters, and a differential mobility analyzer to determine the condensation nuclei size spectrum, nephelometers for the aerosol scattering coefficient, and an aethaelometer for the aerosol absorption coefficient. The objective of this work is to characterize aerosol radiative properties in the region studied, and also to develop tools that may lead to a predictive understanding and modeling of the remote aerosol and its radiative properties. The following specific objectives will be addressed: Establish a link between aerosol microphysical, chemical and optical parameters that can be used to model aerosol optical properties, radiative forcing and satellite derived radiance. Examine the contribution of fine particles (e.g. sulfate) and coarse particles (e.g. sea salt) and relative humidity to the local and column aerosol scattering extinction. Develop a quantitative understanding of the processes shaping evolution of the aerosol in the marine boundary layer during Lagrangian advection. Identify the presence of particles recently formed in situ and/or surface derived aerosol (sea salt, dust, soot) in the mid-troposphere and examine the relationship of associated air masses to environmental processes and sources. Work with other ACE-1 participants towa rd linking aerosol data, lidar data, gaseous precursors, etc. on global, regional and local scales to identify key parameters and processes for a dynamic model of remote marine aerosol.

小行星9419475 这个项目是南半球海洋浮质特性试验的一部分，该试验将于1995年在遥远的南太平洋进行，利用飞机、船上和地面测量各种化学物质、物理和气象参数，其中心目标是调查大气浮质的形成、演变和光学特性。在这一部分中，将在C-130飞机上部署各种仪器来测量气溶胶特性：热调节的光学颗粒计数器将用于评估较大光学活性气溶胶的尺寸分辨组成，各种凝结核计数器、超细凝结核计数器，以及微分迁移率分析器以确定凝结核尺寸谱，用于气溶胶散射系数的浊度计和用于气溶胶吸收系数的蒸发计。 这项工作的目的是在研究区域的气溶胶辐射特性的特点，并开发工具，可能导致远程气溶胶及其辐射特性的预测性理解和建模。建立气溶胶微物理、化学和光学参数之间的联系，这些参数可用于模拟气溶胶光学特性、辐射强迫和卫星辐射率。 检查细颗粒（如硫酸盐）和粗颗粒（如海盐）以及相对湿度对局部和柱状气溶胶散射消光的贡献。 对拉格朗日平流过程中海洋边界层气溶胶的形成演变过程有一个定量的了解。 确定对流层中部最近原位形成的粒子和/或表面衍生的气溶胶（海盐、灰尘、煤烟）的存在，并研究相关空气质量与环境过程和来源的关系。 与ACE-1的其他参与者合作，将全球、区域和地方尺度的气溶胶数据、激光雷达数据、气体前体等联系起来，以确定远程海洋气溶胶动态模型的关键参数和过程。